<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style type="text/css">
        .box {
            height: 768px;
            background-color: #999;
            background-image: url("按钮.jpg");
            background-position: 20px 30px;
            background-attachment: fixed;
            /* 背景属性连写 */
            background: red url("按钮.jpeg") no-repeat 30px 40px scroll;
        }
    </style>
</head>

<body>
    <div class="box">

    </div>
</body>

</html>